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Re: Difficulty with saving Package .m files

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  • Subject: [mg110428] Re: Difficulty with saving Package .m files
  • From: John Fultz <jfultz at>
  • Date: Thu, 17 Jun 2010 07:11:08 -0400 (EDT)

On Thu, 17 Jun 2010 02:04:10 -0400 (EDT), M Kelly wrote:
> I am having difficulties in saving or editing the Package .m files.
> If I open a .m file and attempt to make any changes to it and then
> Save the file or even use Save As, then it always wraps every line
> with (* *) annotation brackets, making the file unusable when I
> attempt to load in the definitions with Get[].
> Does anyone have a solution to this problem, or is it the case that
> Mathematica is just forcing me to use the IDE Wolfram Workbench to
> make any changes?
> Any help would be appreciated.

By default, cells created using the Code style will be saved as executable code,
while those created using the Input style will be saved as commented code. The
two styles are useful so that you can maintain code which you can execute inside
the front end for testing or bootstrapping purposes, but which doesn't get
deployed for runtime use.

If you open a .m file, you should be in an environment where all new cells
created by default are Code cells.  If you're working with a .nb file, then you
will have to make sure to manually change the style to Code (Alt+8 or Cmd+8, or
Code under the Format->Style menu) before choosing the Save As command and
creating a package file.


John Fultz
jfultz at
User Interface Group
Wolfram Research, Inc.

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